Time-varying Quark Masses and Cosmological Axion Energy

Details Time-varying Quark Masses and Cosmological Axion Energy Time-varying Quark Masses and Cosmological Axion Energy

2004-08-23

arxiv.org/abs/hep-ph/0408237v1

Phys.Rev.D71:055006,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages

Scientific paper

10.1103/PhysRevD.71.055006

The possibility is examined that the masses of the light quarks $u$ and $d$
have varied over the course of the universe's evolution. Such a variation would
have an effect on axion cosmology, and can be the basis of a solution of the
so-called axion energy problem. If this is the case, a scalar force somewhat
weaker than gravity could exist that has a range of order 1 km.

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